Special and General Relativity Forum

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Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Graduate Understanding the Four Momentum of a Photon in General Relativity
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Graduate CERN: Accelerating Particles to 99.99% Speed of Light
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Graduate The nature of causality in special relativity (not faster than light travel)
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Undergrad How does speed affect time in Einstein's theory of relativity?
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Graduate The relativity of time and defining the age of the universe
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Graduate Time Dilation at Center of a Neutron Star
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Graduate If an electron falls into a black hole?
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Graduate Does Gravitational Time Dilation Affect Planetary Geology?
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High School Measuring a Rod in a Running Train: Why?
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Graduate Relativity interstellar travel question
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Graduate Infinite speeds would defeat time keeping
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Graduate How to find that the universe is expanding from general theory of relativity
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Graduate How Does Time Dilation Affect Aging in Moving Frames?
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Graduate Do Lie and Covariant Derivatives Relate in Vector Field Manipulation?
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Graduate Changes in mass and length at high speed
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Graduate Please explain these Equations in GR, Modified Universal law of Gravity.
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Graduate What is the significance of velocity in relativistic electromagnetism?
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Graduate Initial conditions for BH in GR
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Graduate What is an invarient observable in GR
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Graduate The set of Lorentz boosts and space rotations form a group
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Graduate Painleve chart for FRW spacetime
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Undergrad Observing and Experiencing Speed of Light
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Graduate Is there mass without momentum?
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Graduate How does gravitational time dilation increase the spacetime interval?
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Graduate Why is the speed of light same in all reference frames?
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Graduate SR, Inertial frames, Movement, Testing
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Undergrad How would Earth's time slow down?
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Graduate New animated video explaining Special and General Relativity.
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Graduate The Poincaré Group and Geodesics in Minkowski Spacetime
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Graduate Time for object to fall length of 10m rope, assuming g=10m/s
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Graduate How fast can light change its direction?
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Graduate What is the velocity of a photon?
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Graduate Are My Calculations for Proper Time on a Rocket in General Relativity Correct?
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Graduate Does the curvature of space-time create the illusion of distance shrinking?
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Graduate Speed of light between a source and target moving wrt to each other
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Graduate Four-Momentum Invariant and Conservation Laws Yielding Contradictory Results
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Graduate What do I see wrong here ? T2 = T1(1 - V/C)
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Undergrad Why light is remains massless even if travelling w/ the fastest velocity?
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Graduate Reciprocity of Time Dilation in General Relativity
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Graduate General confusion with four velocity and four acceleration
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Graduate Acceleration/deceleration questions
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Graduate Could the Michelson & Morley Experiment Have Used Electrons Instead of Light?
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Graduate Do Corners Experience Stress in Curved Space?
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Undergrad Does Moving Train See Stationary Observer at .6c? - I'm Not Sure
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Graduate Is time slowing down or is it just taking a longer amount time?
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Graduate Wikipedia quote on gravitational time dilation
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Undergrad Mass increasing as velocity approaches c
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Graduate A Relativity Experiment I'd Like to See
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Graduate Space time curvature caused by fast electron
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Graduate Trying to understand spacetime curvature
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Graduate Block Time vs Q. Indeterminacy
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Graduate Travel faster than speed of light. According to what reference frame?
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Graduate Question on Black Hole Metrics
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Graduate Faster than Light Travel Question
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Graduate Perceived time and distance at Speed of light
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Graduate Quick tetrad/vierbein question
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Graduate Understanding Frame of Reference in Special Relativity
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Graduate Twin Paradox: Accelerating, Turning Back & Decelerating
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Graduate What is the Significance of the Lambda Symbol in Transformation Matrices?
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Graduate I don't understand photon clocks
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Undergrad Does Relativity Theory Explain Why Racing Drivers Age Slower?
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Undergrad How is relativity theory applied to gps?
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High School Can We Really See Into the Past by Observing Distant Worlds?
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Graduate How are the ways in which time is dialted unified?
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Graduate Simple question about time dilation in accelerated reference frames
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Undergrad How did light speed become the governor of relativity?
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Graduate SR: Questions on Time Synchronization & Relativity
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Graduate Different Slices of Now Observable from Earth?
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Graduate Can Negative Mass Really Defy Gravity?
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Graduate What experiment shows that the universal speed limit is the same as light?
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Undergrad Why Is Light Speed a Limit for Spacecraft?
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Graduate I would like to see the math of something
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Graduate Question about how Time varies with Velocity
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Graduate Spacetime desynchronized in quantum realm?
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Graduate Diagonal Metric and General Relativity: A Fundamental Question
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Graduate What happens to stars in front of a falling observer entering a black hole?
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Graduate Does a Photon Traveling at Light Speed Imply Infinite Mass and Energy?
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Graduate Question of units of B, H in Gaussian system
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Undergrad I have a question for the masses. if you were traveling at 60 mph
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Graduate Metric of 2 Bodies: Superposition & Resulting Tensor
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Graduate Can a Car's Stereo Still Function at the Speed of Light?
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Graduate Understanding Inextendible Worldlines in Manifolds: Examples and Applications
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Mind-Bending Mirror Puzzle: Experience the Impossible in Bali
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Graduate Does time stop for a photon? Why is that a nonsensical question?
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Graduate Gravitational field conceptual question
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Graduate Calculating GPS Accuracy Using Special Relativity and General Relativity
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Graduate What is the observed precession of Mercury?
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Graduate Can Time Dilation Allow for Survival of the Universe's Death?
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Graduate Solving Sliding Clock Fun with Two Photons
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Graduate How Does General Relativity Explain Earth's Shape and Gravity?
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Graduate Is Gravity Just Inertia in Disguise?
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Graduate Relativistic mass increase appearing to form a black hole vs. a real black hole
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Graduate Twins Paradox: The paradox within the paradox
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Graduate Studying special relativity and using the idea of four vectors
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Graduate Objects move into gravity=shorter time?
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Graduate Lorentz Transformations Acceleration: A simple problem
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Graduate A problem in special relativity with a surprising result
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Graduate The principle of inertia and hypothetical FTL particles
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Graduate Is a gravitational circuit possible?
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Graduate Abraham's light momentum breaks special relativity?
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